Date: Fri, 16 Mar 2001 18:12:29 +0900 (JST) From: Hajimu UMEMOTO <ume@FreeBSD.org> To: sdk@shell.yuck.net Cc: ume@FreeBSD.org Subject: Re: 4.3-BETA2, name resolution problem? Message-ID: <20010316.181229.125831413.ume@FreeBSD.org> In-Reply-To: <20010315161333.A14337@visi.com> References: <20010315161333.A14337@visi.com>
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>>>>> On Thu, 15 Mar 2001 16:13:33 -0600
>>>>> Stephen <sdk@shell.yuck.net> said:
sdk> I've just installed 4.3-BETA2 and compiled a custom kernel with IPv6
sdk> disabled and have nothing IPv6 related in /etc/rc.conf. I'm noticing slow
sdk> telnet and fetch connect times, and after snooping with Ethereal, found
How slow is it?
sdk> that it's trying to resolve my FQ hostname via DNS with a type 'AAAA'
sdk> (IPv6?) before falling back to type 'A'. 4.2-R doesn't appear to do this.
Now, getaddrinfo(3) always queries AAAA RR in addition to A RR even if
kernel doesn't support IPv6. It is real behavior of getaddrinfo(3)
without specifying AI_ADDRCONFIG. Because, query for AAAA RR and A RR
is done in same time, it should not be a problem. Once there was DNS
query order problem at 4.0-RELEASE days. But, I believe it was
completely corrected.
--
Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume@mahoroba.org ume@bisd.hitachi.co.jp ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/
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